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BGP SNMP Traps - Unknown #


I have a 3745 running IOS 12.3(14)T3, and configured with SNMP v1, I am getting following BGP Messages:

BGP Peer Connection Idle (BGP Peer x.x.x.x)

BGP Peer Connection Status Unknown, 1 (BGP Peer x.x.x.x)

BGP Peer Connection Status Unknown, 6(BGP Peer x.x.x.x)

BGP Peer Connection Status Unknown, 5 (BGP Peer x.x.x.x)

BGP Peer Connection Status Unknown, 4 (BGP Peer x.x.x.x)

BGP Peer Connection Status Unknown, 3 (BGP Peer x.x.x.x)

Please help me in understanding what are and why am I getting these "Unknown" Traps. (I assume them to be BGP State messages like Active, Connect, OpenSent etc...)

I got across this extract from one of's pages:


Note: You may notice incorrect BGP trap OID output when using the SNMP version 1 BGP4-MIB that is available for download at When a router sends out BGP traps (notifications) about state changes on an SNMP version 1 monitored BGP peer, the enterprise OID is incorrectly displayed as . (bgp) instead of . (bgpTraps). The problem is not due to any error with Cisco IOS software. This problem occurs because the BGP4-MIB does not follow RFC 1908 rules regarding version 1 and version 2 trap compliance. This MIB is controlled by IANA under the guidance of the IETF, and work is currently in progress by the IETF to replace this MIB with a new version that represents the current state of the BGP protocol. In the meantime, we recommend that you use the SNMP version 2 BGP4-MIB or the CISCO-BGP4-MIB to avoid an incorrect trap OID.


This is the link:

I haven't yet tried the v2c option as it says above and was hoping that CISCO-BGP4-MIB should do the trick, also stated above, but still it is not helping to sort this out...

Also, are there any limitations w.r.t. VRF interfaces, I had some IOS issues with overall SNMP messages before, i.e: no SNMP Traps were transmitted to Trap receiver, but upgrade of IOS solved it.

But this new problem popped up :-(




Re: BGP SNMP Traps - Unknown #

The issue is due to misconfiguration of the Autonomous system number on the neighbor BGP peer.

check with the following command in the neighboring router.

router#sh ip bgp summary

New Member

Re: BGP SNMP Traps - Unknown #


This issue has been solved, there were some implementation issues on the NMS side... has been resolved....



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